Description

Diisooctyl 4,4'-[(Dioctylstannylene)Bis(Oxy)]Bis[4-Oxoisocrotonate] is a specialized organotin compound primarily utilized as a high-performance stabilizer and catalyst in polymer chemistry. Its molecular structure is engineered to provide exceptional thermal stability and catalytic activity, making it a critical additive for enhancing material properties. This product is essential for manufacturers in the plastics, coatings, and specialty chemical industries seeking to improve the durability and processing characteristics of their formulations.

Application

• Primary stabilizer for polyvinyl chloride (PVC) and other halogenated polymers to prevent thermal degradation during processing.
• Key catalyst in esterification and transesterification reactions for the production of plasticizers and polyester resins.
• Additive in silicone and polyurethane systems to enhance cross-linking efficiency and final product stability.
• Component in heat stabilizer packages for wire and cable insulation, window profiles, and siding applications.
• Used in the formulation of lubricants and greases as an anti-wear and extreme pressure agent.
• Intermediate in the synthesis of other organometallic compounds for specialized catalytic applications.
• Stabilizing agent for adhesives and sealants to prevent viscosity drift and maintain performance over time.

Basic Information

Product Name	Diisooctyl 4,4'-[(Dioctylstannylene)Bis(Oxy)]Bis[4-Oxoisocrotonate]
CAS No.	33568-99-9
Molecular Formula	C52H96O8Sn
Molecular Weight	960.27 g/mol
Synonyms	Dioctyltin Diisooctyl Maleate; Dioctyltin Bis(isooctyl maleate); Stannane, dioctylbis[(1-oxo-2-buten-1,4-diyl)bis(oxy)]bis-, bis(2-ethylhexyl) ester; Tin, dioctylbis[(1-oxo-2-buten-1,4-diyl)bis(oxy)]bis-, bis(2-ethylhexyl) ester; Organotin stabilizer 33568-99-9; Thermolite 890; Advastab TM-692; Dioctyltin maleate ester
EINECS	Contact for details

Quality Control

Our production of Diisooctyl 4,4'-[(Dioctylstannylene)Bis(Oxy)]Bis[4-Oxoisocrotonate] adheres to a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot is analyzed to confirm identity, purity, and performance characteristics. Certificates of Analysis (COA) detailing specific test results are provided with every shipment. We support compliance with relevant global regulatory frameworks, including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from incompatible materials such as strong acids, strong bases, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, pale yellow to yellow viscous liquid
Identification (IR)	Conforms to reference spectrum
Assay (Tin content)	≥ 12.0 %
Purity (HPLC)	≥ 95.0 %
Color (Gardner)	≤ 4
Density at 20°C	1.05 - 1.10 g/cm³
Refractive Index (n20D)	1.480 - 1.490
Moisture (KF)	≤ 0.5 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.